Advantages
Good wear and friction behavior, machinability and resistance to seawater/saltwater environments. Bearing bronze can accommodate embedded particles in suitable lubricated applications.
Review the sliding contact and the machined fit together
For a bronze bushing or bearing component, tell Aria about the mating part, loads and important dimensions. We help you discuss the selected alloy, machining and inspection requirements together. Keep the alloy and material condition explicit; the C93200 reference values below do not describe every bronze option.
Material options
| Property | Details |
|---|---|
| Colors | Reddish-golden metallic |
| Special properties | Alternatives include phosphor bronze C51000 for spring/corrosion requirements and aluminum bronze C95400/C95500 for higher strength; C54400 is another distinct grade. |
Detailed values describe C93200 / SAE 660 bearing bronze, as cast. Family ranges are broader selection references and may include different grades or reinforcement levels. Confirm the selected grade, condition and test method for your part. Melting temperature is not a working-temperature limit; use the mill certificate for the specified alloy and temper.
Material properties
| Property | Metric | Imperial | Test method / conditions |
|---|---|---|---|
| Density | 8.8 g/cm³ | 0.318 lb/in³ | as-cast · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Tensile Strength UTS | 240 MPa | 35,000 psi | ASTM B505 · as-cast · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Yield Strength | 130 MPa | 18,000 psi | ASTM B505 · as-cast, 0.5% · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Elongation | 20 % | 20 % | ASTM B505 · as-cast · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Hardness | 65 HB | 65 HB | Brinell 500kg · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Elastic Modulus | 100 GPa | 15×10⁶ psi | Reference: C93200 / SAE 660 bearing bronze, as cast |
| Compressive Strength | 320 MPa | 46,000 psi | as-cast · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Fatigue Strength | 110 MPa | 16,000 psi | Reference: C93200 / SAE 660 bearing bronze, as cast |
| Thermal Conductivity | 59 W/m·K | 34 BTU/h·ft·°F | Room temperature · Reference: C93200 / SAE 660 bearing bronze, as cast |
| CTE | 18 µm/m·K | 10 µin/in·°F | Reference: C93200 / SAE 660 bearing bronze, as cast |
| Specific Heat | 360 J/kg·K | 0.086 BTU/lb·°F | Reference: C93200 / SAE 660 bearing bronze, as cast |
| Melting Range | 850~980 °C | 1570~1790 °F | Solidus–liquidus · Reference: C93200 / SAE 660 bearing bronze, as cast |
| Electrical Conductivity | 12 % IACS | 12 % IACS | Reference: C93200 / SAE 660 bearing bronze, as cast |
Material family ranges — selection reference
| Property | Family reference |
|---|---|
| Material class | Copper / copper alloy |
| Density (g/cm³) | 7.4–8.9 |
| Tensile strength (MPa) | 200–700 |
| Elongation at break (%) | 5–40 |
| Elastic modulus (GPa) | 95–120 |
| Hardness | HB 60–200 |
| Temperature reference (°C) | Melting point 850–1050 |
Product standards and grade references
| Standard or designation | Scope and selection notes |
|---|---|
| ASTM B505 / B505M | Continuously cast copper-alloy stock. |
| ASTM B584 | Copper-alloy sand castings for general applications. |
| SAE J462 | Cast copper alloys; check the specified alloy and casting route. |
| Bearing-bronze comparison | C93200 is a leaded tin bearing bronze, nominally about 83% Cu, 7% Sn, 7% Pb and 3% Zn. GB ZCuSn5Pb5Zn5 has different nominal Sn/Pb/Zn levels and is not an equivalent replacement. |
| Before ordering | Grade names listed for comparison are not a blanket equivalence declaration. Agree the product standard, edition, delivery condition and required certificate before approving a substitution. |
Advantages and considerations
Material limitations
Moderate load capacity, possible casting porosity and lead content. It is not a universal choice for high-load structures or lead-restricted applications.
Applications
Typical applications
Bearings, bushings, slides, worm wheels, pump and valve parts and wear plates operating with suitable clearance and lubrication.
Design considerations
Processing options
CNC turning of cast or continuously cast rod/tube, milling, drilling and boring. Allow for casting skin, porosity and machining stock.
Finishing options
Polishing, blasting and clear lacquer where appropriate. Bearing fits commonly use a fine turned or bored natural surface.
Grade and finish combinations
Assess porosity for pressure or sealing parts, choose lead-free material where needed, and specify clearance, lubrication and wear limits for the assembly rather than treating one replacement threshold as universal.
Color and grade options
Natural reddish-golden metallic color. Polished or blasted surfaces; clear lacquer on suitable nonbearing areas.
Bearing wear and replacement criteria
Set bearing replacement limits from the assembly’s permitted clearance, lubrication, load, speed and alignment. A fixed radial-wear threshold such as 0.1 mm is not suitable for every bronze bearing. Inspect the shaft and housing as well as the bushing, and use the drawing or maintenance specification to decide replacement.